In the background a person plays with a kid in the pool. The person is labeled “Companies updating their website”. The kid is labeled “The company logo”.

In the foreground a kid seems to be drowning. It is labeled “Useful information”.

In a second panel a skeleton sits at the bottom of the pool. It is labeled “The copyright year”

you are viewing a single comment's thread
view the rest of the comments

[–] 30p87@feddit.de 1 points 1 year ago (1 children)

            
              The C compiler, when I parse a &(float) as (long) (it's actually an evil floating point hack to run Quake III on an X86_64 CPU emulated in Scratch running on Spotifys Car Thing) (This would never be possible in Rust)

[–] OmnipotentEntity@beehaw.org 2 points 1 year ago* (last edited 1 year ago) (1 children)

std::mem::transmute

[–] 30p87@feddit.de 1 points 1 year ago (1 children)

Yes, but

it's unsafe, therefore not really Rust I'd argue
it doesn't look as good

float Q_rsqrt(float number) {
   long i;
   float x2, y;
   const float threehalfs = 1.5F;

   x2 = number * 0.5F;
   y = number;

   i = * ( long * ) &y;
   i = 0x5f3759df - ( i >> 1 );
   y = * ( float * ) &i;

   y = y * ( threehalfs - ( x2 * y * y ) );
   return y;
}

[–] OmnipotentEntity@beehaw.org 2 points 1 year ago (1 children)

Please don't tell me you, unironically, actually use the Carmack rsqrt function in the year of our Linux Desktop 2024.

Also if you like, you can write unsafe Rust in safe Rust instead.

[–] 30p87@feddit.de 1 points 1 year ago

No. But somebody may be.